First Alert SMI105-AC Interconnect Hardwire Ionization Smoke Alarm with 10-Year Battery Backup

First Alert SMI105-AC Interconnect Hardwire Ionization Smoke Alarm with 10-Year Battery Backup. First Alert's Precision Detection advanced sensing technology and meets industry standards. Interconnect multiple alarms together to help provide an early warning throughout your whole home and have peace of mind knowing the 10-year battery backup provides continuous protection in the event of a power outage.

• Precision Detection advanced sensing technology
• Complies with industry standards to reduce cooking nuisance alarms
• Provides early warning in the event of a home fire emergency
• 10-year battery backup provides continuous protection during power outages
• Through early warning interconnect, when one alarm sounds, all compatible alarms will sound
• Alarm indicator visually identifies the unit that initiated the alarm
• End of life warning lets you know when it's time to replace the alarm
• Test/silence button for efficient testing to ensure alarm is working properly